Costa, H.H.2015-02-092015-02-091966Costa, H.H. (1966) Responses of Gammarus Pulex (L.) To Modified Environment, Crustaceana, 11: 245-256.http://booksandjournals.brillonline.com/content/journals/10.1163/156854066x00577http://repository.kln.ac.lk/handle/123456789/5237enResponses of Gammarus Pulex (L.) To Modified EnvironmentArticle